Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790891 | Environmentally safe paint stripper | Augustin T. Chen, Hong Zhao | 2004-09-14 |
| 6624222 | Environmentally safe paint stripper emulsion | Augustin T. Chen, Hong Zhao | 2003-09-23 |
| 6508652 | Chemblox educational molecular models | — | 2003-01-21 |
| 6331582 | Low gloss coating | Augustin T. Chen, Hong Zhao | 2001-12-18 |